de.lmu.ifi.dbs.elki.datasource.filter

Class FilterUtil

java.lang.Object

de.lmu.ifi.dbs.elki.datasource.filter.FilterUtil

public final class FilterUtil
extends Object

Utilities for implementing filters.

Since:

0.4.0

Author:

Erich Schubert

Constructor Summary

Constructors

Modifier	Constructor and Description
private	FilterUtil() Fake constructor: do not instantiate.

Method Summary

Methods

Modifier and Type	Method and Description
static int	findLabelColumn(BundleMeta meta) Find the first "label-like" column (matching TypeUtil.GUESSED_LABEL ) in a type information.
static int	findLabelColumn(MultipleObjectsBundle bundle) Find the first "label-like" column (matching TypeUtil.GUESSED_LABEL ) in a bundle.
static <V extends NumberVector> NumberVector.Factory<V>	guessFactory(SimpleTypeInformation<V> in) Try to guess the appropriate factory.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FilterUtil

private FilterUtil()

Fake constructor: do not instantiate.

Method Detail

guessFactory

public static <V extends NumberVector> NumberVector.Factory<V> guessFactory(SimpleTypeInformation<V> in)

Try to guess the appropriate factory.

Type Parameters:

V - Vector type

Parameters:

in - Input type

Returns:

Factory

findLabelColumn

public static int findLabelColumn(MultipleObjectsBundle bundle)

Find the first "label-like" column (matching TypeUtil.GUESSED_LABEL ) in a bundle.

Parameters:

bundle - Bundle

Returns:

Column number, or -1.

findLabelColumn

public static int findLabelColumn(BundleMeta meta)

Find the first "label-like" column (matching TypeUtil.GUESSED_LABEL ) in a type information.

Parameters:

meta - Meta data

Returns:

Column number, or -1.